Pump and storage tank



Jan. 21, 1930. v x T, -f5 1,744,550

PUMP AND STORAGE TANK Filed Oct. 6. 1926 2 Sheets-Sheet 1 QU 0x Jan. 21,1930. .1. T. JANETTE- PUMP AND STORAGE TANK Filed oct. 6. 1926 2Sheets-Sheet 2 raw/r Patented-Jan. 21 1930 JOHN T. JANETTE, or CHICAGO,rumors rum? AND STORAGE TANK Application filed October 6, 1926; SerialNo. 139,932.

This invention relates to pumpswhich are adapted for pumping variousfluids or liquids, but which are intended particularly for pumpingliquid fuel, oil, or the like; and also relates to the combination ofsuch a pump with a storage tank and controlling means whereby the pumpwill be automatically regulated and there will be practicallyno daniigerof gas or i'umes escaping from the ta My improved apparatus has beendevised and constructed with special reference to itsuse in connectionwith oil burning apparatus. In order to supply oil for such apparatus,it is more or less common to provide an outdoor storage tank; and topump theoil or fuel from such tank toa supply tank located within thebuilding and adjacent to theburner, the oil being fed by gravity or.otherwise from the supply tank to the burner. I

The objects ofthis invention are to provide an improved,pumpingapparatus; to

provide a pumping apparatus for liquid fuel which will be-economical tomanufacture and which will be particularly efiicient and durable inoperation; to provide a pump having an inner chamber or crank casev intowhich'the' liquid is discharged, whereby the operating partswill berunning in the oil or liquid; toprovide a supply tank having a pumpmounted therein which; is provided with a crank case into: whichvtheliquid is pumped and from-which it overflowsinto the tank; to provideamotor driven pump with a sealed floaticontrol for the motor; to providea high speed piston pump which may be driven directly from'the motor;and to provide such other advantages and novel features as willbedescribed hereinafter.

ing a preferred form of this invention;

Figure l isa vertical sectional View with partsbroken awayto show. theinner construction; J .7

Figure 2 is a horizontal sectional view takenonthe line 2--2 of Figure.1;

Figure 3 is a sectional view taken on the line 3-3 of*Figure2;

Figure i isa sectionalfview taken on the 51ine44oFigure2;-andh a shaft11 projecting downwardly through a spectively with pistons 24 and 25which are In the accompanying drawings illustrat-T Figure 5.. is an endview or detail of the cylinder head or plug.

The supply tank 6 which may be of any desiredsize and of any suitablematerial is provided with a substantial cover 7 which is secured theretoby means of bolts 8 and which is provided with a gasket 9 in order 'tomake an air tight joint. The motor 10 is mounted directly on the coverwith its hole in the cover.

The pump 12 is of the double opposed cylinder type and has a casing 13which is secured V to the cover 7 in any suitable manner, as by means ofbolts 141. The casing comprises a lower chamber or receptacle 15, whichis con-' nected by means of posts or segments 16 with a top plate 17.The chamber 15 is closed at the'bottom by a disk or bottom plate 18, butis open at the top so thatliquid dischargedtherein may overflow into thetank 6. The cylinders 19 and 20 are arranged on opposite sides of thecasing and are preferably formed integrally therewith. The outer ends ofthe cylinders are threaded to receive plugs or heads 21 which haveinwardly extending projections 22'which are of slightly less diameterthan the cylinder and which are provided on their inner ends with one ormore grooves 23. These projections vextend so into points approximatelyopposite the outlet portsand with the grooves therein tend to I preventnoise when the pump is in operation.

The cylinders 19 and 20 are provided redriven by crank rods or eccentricrods 26 and27. The motor shaft 11 is provided with eccentrics28 and .29which-are fixed thereto and which engage with the respective eccentricrods 26 and 27. w

The 'fuel or liquid passes from the storage tank or other source ofsupply (not shown) through a pipe 30 and strainer 31 to the pump intakepipe 32. This pipe is connected by branches 33 and 34 witlithe intakeorifices of the cylinders 19 and 20. The cylinders are provided withintake valves 35 and outlet valves 36, as shown particularly in Figures7 3 and 4. The outlet orificesor passageways 37 10c pivoted at 43 in abracket 44 on the pipe 40.-

The opposite end of the lever 42 is engaged by a float rod or stem 45 towhich is secured a float 46. The stem is guided by passing up through ahole 47 in the bottom of the crank case.

The tank 6 has an outlet 48 and is also preferably provided with anoverflow pipe 49 which leads back to the storage tank.

When the motor is in operation, the liquid will be drawn in through theinlet pipes to the cylinders in the well known manner,-it

being understood that, as the pistons are drawn inwardly, they tend tocreate a vacuum in the cylinders which is broken at the time they passthe inlet ports so that the liquid is quickly drawn into the cylinders.With this arrangement it is possible to operate the pump without inletvalves, but I have found it advisable to use them to insure properoperation of one pump in the event that the other pump fails to operateon account of failure of its exhaust valve to seat properly, as whenheld open by dirt or the like. On the discharge stroke of the pistons,the fluid will be forced aroundthe projections 22 and out through theoutlet orifices or exhaust ports 37 and during this discharge movement,-I

have found that the grooves 23 assist in pre-' venting noise or poundingduring the discharge. The liquid or fuel is pumped directly into thechamber 15 which extends upwardly at some distance beyond the cylindersso that this chamber is always full of oil or fuel and consequently thepistons and driving connections are submerged or operate in' oil so thatthey are at all times independently lubricated and are also cooled bythe flow of oil throu h the chamber. On account of the balancearrangement of the cylinders and the operating of the parts under oil inthis manner, I am enabled to drive the pump at an exceedingly high speedandpractically without noise or vibration. As illustrating such speed,it maybe noted that these pumps are now being operated with motorsrunning at seven hundred and fifty revolutions per minute. v

The switch and connections are arranged so that when the oil reaches apredetermine upperlevel in the'tank 6, the float will be raised and willopen the switch to stop the motor. When the float has moved down to thelower level, the switch will again be closed d from the casing into thetank.-

to start the motor, and if desired, the switch may be so arranged that afurther drop of the floatwill again open the switch to stop the motor asin the case of undue discharge from the supply tank. The parts howeverare arranged so that the lower end of the pipe 40 will be submerged inliquid so that the pipe is sealed and no vapors or gases from the tank 6may escape through the opening necessary for the switch operating rod.This is a particularly important feature, as when liquid fuel of certaingradesis being pumped, some air is usuallydrawn in theretlirough andvapors or gasesformed, which is apt to be of an explosive character, sothat if they are permitted to escape around the switch, or motor, therewill be a possibility of their becoming ignited by sparks or arcs.

From this description it will be seen that I provide a simple andcompact pumping apparatus together with a storage tank, all of which maybe readily mounted on legs or other supports and which will occupy butlittle room. Furthermore, on account of the direct drive and few parts,the pump is particularly eflicient and is not likely to get out oforder. As some of the structural features may be modified or the detailsof construction may be changed in order to adapt the pump for differentconditions or uses, I do not wish to be limited to the particularform orarrangement herein shown and described, except as specified in thefollowing claims, in which I claim: v

1. A pumping ap aratus comprising a tank, a casing mounted ing 0positely disposed integrally formed cylin ers, pistons for saidcylinders, a motor having its shaft projecting into the casing,eccentrics on said shaft, eccentric rods from the eccentrics to thepistons, inlet pipes from a source of su ply to the cylinders, dischargepassageways om the cylinders to the casing, said casing being adapted tohold a predetermined .amount of liquid and discharging over the top intothe tank.

2. In an apparatus of the character set forth, thecombination of asupply tank having a cover, a pump casing secured to the cover andprojecting downwardly intothe tank, a motor mounted on the tank withits;

shaft projecting downwardly into the casing, oppositelydisposed'cylind'ers on said casing,

istons for said cylinders, means for mg the pistons from the shaft,inlet connections for said cylinders,'and outlets from the cylinders tothe. casing, the lower ortion of the casing being adapted to hol apredetermined amount of li uid as it is pumped therein, the balance of te liquid overflowing 3. The combination with having a cover, of a pumpcasing the inside offthe cover and ha a crank chamber which is closed atthe bottom and in said tank and havdrivsupply tank secured to ias open.at the'top, cylinders projecting outleading to the crank chamber, thearrange.

ment being such that the liquid will be pum ed into the crank chamberand will over ow into the tank, the pistons and driving parts beingsubmerged in said liquid.

4. In an ap aratus of the character set forth, the combination of asupply tank having a tightly fitting cover, a motormounted on said coverwith its shaft projecting downwardly into the tank, a double pump havingopposed cylinders, driven by said shaft. a strainer, a pipe leading froma source of supply to said strainer, passageways from the strainer tothe cylinders, a switch mounted on the cover for controlling the motor,a pipe projecting downwardly from the cover to a point below the levelof the liquid, a switch rod from the switch which passes freely throughthe pipe, a lever having one end connected with said rod, a floatconnected with'the other end of the lever, and a discharge pipe fromsaid tank.

JOHN T. JANETTE.

